linux-kernel - Re: [PATCH v2 1/2] platform/x86: samsung-laptop: use octal numbers for rwx file permissions

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Message-ID: <CAHp75VdSv4Ja7+bjPDvOawuv1ukhKZ==bjQ_MQbNPUds_7mVZw@mail.gmail.com>
Date:   Tue, 4 May 2021 20:37:16 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Corentin Chary <corentin.chary@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] platform/x86: samsung-laptop: use octal numbers
 for rwx file permissions

On Tue, May 4, 2021 at 8:35 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
>
> On Tue, May 4, 2021 at 8:00 PM Wolfram Sang
> <wsa+renesas@...g-engineering.com> wrote:
> >
> > Andy asked me to do it before working further on the code.
>
> Thanks!
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
>
> > Suggested-by: Andy Shevchenko <andy.shevchenko@...il.com>
> > Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> > ---
> >
> > Change since v1: new patch
> >
> >  drivers/platform/x86/samsung-laptop.c | 35 +++++++++++----------------
> >  1 file changed, 14 insertions(+), 21 deletions(-)
> >
> > diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
> > index d5cec6e35bb8..763d97cbbe53 100644
> > --- a/drivers/platform/x86/samsung-laptop.c
> > +++ b/drivers/platform/x86/samsung-laptop.c
> > @@ -388,7 +388,7 @@ MODULE_PARM_DESC(force,
> >                 "Disable the DMI check and forces the driver to be loaded");
> >
> >  static bool debug;
> > -module_param(debug, bool, S_IRUGO | S_IWUSR);
> > +module_param(debug, bool, 0644);
> >  MODULE_PARM_DESC(debug, "Debug enabled or not");
> >
> >  static int sabi_command(struct samsung_laptop *samsung, u16 command,
> > @@ -705,7 +705,7 @@ static ssize_t set_performance_level(struct device *dev,
> >         return count;
> >  }
> >
> > -static DEVICE_ATTR(performance_level, S_IWUSR | S_IRUGO,
> > +static DEVICE_ATTR(performance_level, 0644,
> >                    get_performance_level, set_performance_level);
> >
> >  static int read_battery_life_extender(struct samsung_laptop *samsung)
> > @@ -774,7 +774,7 @@ static ssize_t set_battery_life_extender(struct device *dev,
> >         return count;
> >  }
> >
> > -static DEVICE_ATTR(battery_life_extender, S_IWUSR | S_IRUGO,
> > +static DEVICE_ATTR(battery_life_extender, 0644,
> >                    get_battery_life_extender, set_battery_life_extender);
> >
> >  static int read_usb_charge(struct samsung_laptop *samsung)
> > @@ -843,7 +843,7 @@ static ssize_t set_usb_charge(struct device *dev,
> >         return count;
> >  }
> >
> > -static DEVICE_ATTR(usb_charge, S_IWUSR | S_IRUGO,
> > +static DEVICE_ATTR(usb_charge, 0644,
> >                    get_usb_charge, set_usb_charge);
> >
> >  static int read_lid_handling(struct samsung_laptop *samsung)
> > @@ -908,7 +908,7 @@ static ssize_t set_lid_handling(struct device *dev,
> >         return count;
> >  }
> >
> > -static DEVICE_ATTR(lid_handling, S_IWUSR | S_IRUGO,
> > +static DEVICE_ATTR(lid_handling, 0644,
> >                    get_lid_handling, set_lid_handling);
> >
> >  static struct attribute *platform_attributes[] = {
> > @@ -1291,24 +1291,17 @@ static void samsung_debugfs_init(struct samsung_laptop *samsung)
> >         samsung->debug.sdiag_wrapper.data = samsung->sdiag;
> >         samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag);
> >
> > -       debugfs_create_u16("command", S_IRUGO | S_IWUSR, root,
> > -                          &samsung->debug.command);
> > -       debugfs_create_u32("d0", S_IRUGO | S_IWUSR, root,
> > -                          &samsung->debug.data.d0);
> > -       debugfs_create_u32("d1", S_IRUGO | S_IWUSR, root,
> > -                          &samsung->debug.data.d1);
> > -       debugfs_create_u16("d2", S_IRUGO | S_IWUSR, root,
> > -                          &samsung->debug.data.d2);
> > -       debugfs_create_u8("d3", S_IRUGO | S_IWUSR, root,
> > -                         &samsung->debug.data.d3);
> > -       debugfs_create_blob("data", S_IRUGO | S_IWUSR, root,
> > -                           &samsung->debug.data_wrapper);
> > -       debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, root,
> > +       debugfs_create_u16("command", 0644, root, &samsung->debug.command);
> > +       debugfs_create_u32("d0", 0644, root, &samsung->debug.data.d0);
> > +       debugfs_create_u32("d1", 0644, root, &samsung->debug.data.d1);
> > +       debugfs_create_u16("d2", 0644, root, &samsung->debug.data.d2);
> > +       debugfs_create_u8("d3", 0644, root, &samsung->debug.data.d3);
> > +       debugfs_create_blob("data", 0644, root, &samsung->debug.data_wrapper);
> > +       debugfs_create_blob("f0000_segment", 0600, root,
> >                             &samsung->debug.f0000_wrapper);
> > -       debugfs_create_file("call", S_IFREG | S_IRUGO, root, samsung,
> > +       debugfs_create_file("call", S_IFREG | 0444, root, samsung,

Actually you may drop IFREG as well as debugfs will add it if there is
no conflicting file type defined.

> >                             &samsung_laptop_call_fops);
> > -       debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, root,
> > -                           &samsung->debug.sdiag_wrapper);
> > +       debugfs_create_blob("sdiag", 0644, root, &samsung->debug.sdiag_wrapper);
> >  }
> >
> >  static void samsung_sabi_exit(struct samsung_laptop *samsung)
> > --
> > 2.30.0
> >
>
>
> --
> With Best Regards,
> Andy Shevchenko



-- 
With Best Regards,
Andy Shevchenko